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Respiratory substrate yielding maximum number of ATP molecules is
  • a)
    Ketogenic amino acids
  • b)
    Glucose
  • c)
    Amylose
  • d)
    Glycogen
Correct answer is option 'B'. Can you explain this answer?
Most Upvoted Answer
Respiratory substrate yielding maximum number of ATP molecules isa)Ket...
The process of glycolysis in respiration requires glucose as the primary substrate to be oxidised. Any other substrate is first converted to glucose before it can enter glycolysis. Certain substrates like ketogenic amino acids, amylose, glycogen need to be converted to glucose first at a cost of some energy in the form of ATP. Hence their net yield of ATP is less than that of glucose as a substrate.
Community Answer
Respiratory substrate yielding maximum number of ATP molecules isa)Ket...


Glucose

Glucose is the respiratory substrate that yields the maximum number of ATP molecules through the process of cellular respiration.

Explanation:

ATP Production:
- Glucose is a highly efficient respiratory substrate that can be broken down through glycolysis, the citric acid cycle, and oxidative phosphorylation to produce a total of 36-38 ATP molecules per molecule of glucose.
- This is because glucose is a complex molecule that can be fully oxidized to release a large amount of energy in the form of ATP.

Efficiency:
- While other respiratory substrates like ketogenic amino acids, amylose, and glycogen can also be used to produce ATP, glucose is preferred due to its high energy yield and efficiency in ATP production.

Regulation:
- Glucose is the primary source of energy for most cells in the body and is readily available from dietary sources, making it a convenient and efficient substrate for ATP production.
- Cells can easily convert other substrates like amino acids or glycogen into glucose through various metabolic pathways if needed for ATP production.

In conclusion, glucose is the preferred respiratory substrate for ATP production due to its high energy yield, efficiency, and availability in the body.
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